Abrasive wear behavior of MoSi(2)-SiC Composites

Conference · Wed Dec 31 23:00:00 EST 1997

OSTI ID:900583

Alman, David E; Hawk, Jeffrey A; Petrovic, J J ^[1]; Henager, Jr, C H ^[2]; Singh, M ^[3]

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1. LANL
2. PNNL
3. NYMA Inc., NASA Lewis Research Center, Cleveland, OH

This paper investigates the influence of SiC volume fraction and composite processing route on the abrasive wear behavior of MoSi sub 2 -SiC composites. The MoSi sub 2 -SiC (10-67 vol%) particulate composites were produced by: (i) the conventional hot-pressing of mixtures of MoSi sub 2 powders and SiC whiskers; and (ii) through the solid-state displacement reaction between Mo sub 2 C and Si powders to form MoSi sub 2 and SiC during hot-pressing. A MoSi sub 2 -80 vol% SiC composite was also produced by the reactive melt infiltration of a carbon preform with a molten Si-Mo alloy. The incorporation of SiC into a MoSi sub 2 matrix is an effective way to enhance wear resistance, provided the composites are processed to as near full density as possible.

• Research Organization: Albany Research Center (ARC), Albany, OR
• Sponsoring Organization: USDOE - Office of Fossil Energy (FE)
• OSTI ID: 900583
• Report Number(s): DOE/ARC-1998-006
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABRASIVES
CARBON
HOT PRESSING
MIXTURES
PARTICULATES
PROCESSING
WEAR RESISTANCE
abrasive wear
composite materials
hot pressing
mechanical properties
microstructural effects
molybdenum compounds
particulate composites
silicon carbide
wear resistance